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Table 5.
Comparison of the main timing and spectral parameters of the transient BeXRBs RX J0059.2-7138 (Sidoli et al. 2015), SMC X-2 (La Palombara et al. 2016), IGR J01572- 7259 (La Palombara et al. 2018), and SXP59.0 (this work).
| Parameter | RX J0059.2-7138a | SMC X-2a | IGR J01572-7259a | SXP59.0 | ||||
|---|---|---|---|---|---|---|---|---|
| LX (0.2–12 keV, ×10−37erg s−1) | 7 | 14 | 3.6 | 3.5 | ||||
| Porbit (days) | 82 | 18.4 | 35.6 | 122.1 | ||||
| Pspin (s) | 2.76 | 2.37 | 11.58 | 58.95 | ||||
| PF (%) | 8.9 | 35 | 43 | 53 | ||||
| NH (10−20 cm−2) |  |
18 ± 3 |  |
12 ± 1 | ||||
| kTBB (eV) | 93 ± 5 | – |  |
– |  |
– |  |
|
| RBB (km) |  |
– |  |
– |  |
– |  |
|
| fBB/fPL (%) | 1.7 | – | 3.1 | – | 1.6 | – | 3.5 | |
| kTAPEC (keV) | – | 0.21 ± 0.03 | – |  |
– |  |
 |
|
| NAPEC (×10−3 cm−5) | – |  |
– | 5 ± 1 | – | 4 ± 1 |  |
|
| fAPEC/fPL (%) | – | 7 | – | 1.8 | – | 4.5 | 1.4 | |
| N VII | Yes | Yes | Yes | Yes | ||||
| O VII | No | Yes | No | Yes | ||||
| O VIII | Yes | Yes | Yes | Yes | ||||
| Ne ix | Yes | Yes | Yes | No | ||||
| Ne X | No | Yes | no | Yes | ||||
| Mg XI | No | No | Yes | Yes | ||||
| Si xiii | No | Yes | No | No | ||||
| Si xiv | No | Yes | No | No | ||||
| EFe Kα (keV) | 6.6 | 6.6 | 6.4 | 6.3 | ||||
| dBB (km) | 3000 | 1800 | 400 | 570 | ||||
| Rm (km) | 900 | 740 | 1100 | 1100 | ||||
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